Slag shifting device of ladle furnace

Abstract

The utility model belongs to the technical field of ladle furnaces, and discloses a slag shifting device of a ladle furnace, which comprises a lifting unit, a first driver, a fixing component fixed on the ladle furnace and a slag shifting component for shifting slag on the inner wall of the ladle furnace, one end of the connecting shaft is connected with the fixed assembly, the other end of the connecting shaft movably penetrates through the fixed assembly, extends into the ladle furnace and is fixedly connected with a slag shifting assembly, the lifting unit drives the connecting shaft to ascend and descend in the fixed assembly, and the first driver drives the connecting shaft and drives the slag shifting assembly to rotate in the ladle furnace so as to shift slag on the inner wall of the ladle furnace, so that the slag shifting operation height of the slag shifting assembly can be adjusted; and meanwhile, the slag shifting assembly rotates in the ladle furnace around the connecting shaft, slag stripping of all areas on the inner wall of the ladle furnace is achieved, the slag removing efficiency and the cleaning effect are effectively improved, manual participation in slag shifting operation is avoided, and operation can be easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of ladle furnaces, in particular to a slag removing device for ladle furnaces. Background Art

[0002] The ladle furnace process is an off-furnace refining technology that uses electric arc heating under vacuum conditions. The molten steel initially refined in the steelmaking furnace is placed in a refining ladle furnace for refining. During the refining period, a secondary reduction slag line is laid in the refining ladle furnace. The primary oxidation slag (referred to as slag) on ​​the inner wall of the refining ladle furnace needs to be stripped and removed.

[0003] The existing method of partially stripping the slag body is to manually clean the primary oxidation slag or slag body, which not only poses a safety hazard, but also has low efficiency in manual slag removal.

[0004] Another method of partially stripping the slag is to use a slag stripping device as described in utility model patent CN218656802U. Although it can achieve a certain slag stripping effect, it still requires manual assistance during use, that is, manually driving the ball head rod to rotate the disc seat to achieve a grinding roller to perform annular grinding on the slag on the inner wall of the ladle furnace. This operation is cumbersome and the work efficiency is low. Utility Model Content

[0005] To this end, in order to solve the above-mentioned problems, the utility model provides a slag removing device for a ladle furnace, so as to effectively improve the efficiency of removing the slag on the inner wall of the ladle furnace, and can realize the stripping of the slag on the inner wall of the ladle furnace without manual participation in the slag removing operation. The operation is simple and convenient, and the slag removing work efficiency is taken into account.

[0006] To achieve the above purpose, the technical solution provided by the utility model is as follows:

[0007] The utility model provides a slag removing device for a ladle furnace, comprising a lifting unit, a first driving unit with a first driver, a fixing assembly for fixing on the ladle furnace, and a slag removing assembly for removing slag from the inner wall of the ladle furnace; a connecting shaft is arranged between the lifting unit and the fixing assembly, one end of the connecting shaft is rotatably connected to the lifting unit, and the other end is movably arranged through the fixing assembly and extends into the ladle furnace, and is fixedly connected with the slag removing assembly; the lifting unit drives the connecting shaft to rise and fall in the fixing assembly, and the first driver is driven and connected to the connecting shaft, so as to drive the connecting shaft to drive the slag removing assembly to rotate in the ladle furnace, so as to form a slag removing arrangement for the slag body on the inner wall of the ladle furnace.

[0008] Furthermore, the slag removing assembly includes a grinding roller and a second driving unit for driving the grinding roller to rotate, a mounting frame is fixed to one end of the connecting shaft extending into the ladle furnace, the grinding roller is rotatably mounted on the mounting frame, the second driving unit is mounted on the mounting frame and drivingly connected to the grinding roller to drive the grinding roller to rotate; when removing slag, the rotating grinding rollers respectively abut against the inner wall of the ladle furnace.

[0009] Furthermore, the mounting frame includes a first mounting plate and a second mounting plate which are spaced apart from each other in upper and lower directions, the middle parts of the first mounting plate and the second mounting plate are fixedly mounted on the connecting shaft, the grinding roller is arranged between the first mounting plate and the second mounting plate, and the second driving unit is mounted on the first mounting plate.

[0010] Furthermore, the second driving unit includes a second driver, which is fixed on the first mounting plate, and the rotating end of the grinding roller and the driving end of the second driver are connected by a transmission belt.

[0011] Furthermore, the fixing assembly includes a fixing frame and a clamping assembly mounted on the fixing frame; the clamping assembly has a telescopic clamping portion, and when slag is removed, the clamping portion extends to clamp the outer wall of the ladle furnace.

[0012] Furthermore, the clamping assembly includes a threaded rod and a clamping slider fixed on the threaded rod and used for clamping, a fixing seat is fixed on the fixing frame, one end of the threaded rod is fixed with the clamping slider, and the clamping slider can be slidably assembled on the fixing frame, and the other end of the threaded rod passes through the fixing seat to form a threaded connection; the clamping slider is the clamping part.

[0013] Furthermore, the first driver is fixed on the fixing frame, a pulley is fixed on the connecting shaft, and a transmission connection is achieved between the driving shaft of the first driver and the pulley on the connecting shaft via a transmission belt.

[0014] Furthermore, the lifting unit is a lifting cylinder, which is fixed on the fixed frame. A connecting plate is fixed to the telescopic end of the lifting cylinder. One end of the connecting shaft is assembled on the connecting plate through a bearing, and the other end can be movably passed through the fixed frame and extended into the ladle furnace, and is fixedly connected to the slag removal assembly.

[0015] Furthermore, the fixing frame comprises a fixing plate and a supporting frame connected to each other, the supporting frame is arranged on the outer peripheral surface of the fixing plate, and a handle and the clamping assembly are respectively mounted on the supporting frame.

[0016] The technical solution provided by the utility model has the following beneficial effects:

[0017] The fixing assembly is fixed on the ladle furnace, so that the slag removing assembly can be extended into the ladle furnace and accurately pressed against the inner wall of the ladle furnace, so as to facilitate the next step of slag removing operation.

[0018] The lifting unit, the first driver and the connecting shaft cooperate with each other to realize the lifting and lowering of the slag shifting assembly in the ladle furnace, thereby adjusting the slag shifting operation height of the slag shifting assembly, and at the same time driving the slag shifting assembly to rotate around the connecting shaft in the ladle furnace, so as to realize the slag shifting assembly to strip or clean the slag in all areas on the inner wall of the ladle furnace, so as to effectively improve the removal efficiency and cleaning effect of the slag on the inner wall of the ladle furnace, avoid manual participation in the slag shifting operation, and can be simple and convenient to operate, while taking into account the slag shifting work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the slag removing device of the ladle furnace in the embodiment when it is used in the ladle furnace;

[0020] Figure 2 Shown Figure 1 A magnified schematic diagram of area A in the middle;

[0021] Figure 3 The figure shows a schematic diagram of the structure of the slag removal device of the ladle furnace in the embodiment;

[0022] Figure 4 Shown Figure 3 Enlarged schematic diagram of area B in the middle. DETAILED DESCRIPTION

[0023] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0024] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0025] Reference Figures 1 to 3 As shown, this embodiment provides a slag removing device for a ladle furnace (hereinafter referred to as the slag removing device), which includes a lifting unit, a first driving unit having a first driver 4, a fixing assembly 2 for fixing on the ladle furnace 7, and a slag removing device for removing slag from the inner wall of the ladle furnace 7. Figure 3The slag removing assembly 1 shown in the figure has a connecting shaft 5 arranged between the lifting unit and the fixed assembly 2, one end of the connecting shaft 5 is rotatably connected to the lifting unit, and the other end is movably passed through the fixed assembly 2 and extends into the ladle furnace 7, and is fixedly connected with the slag removing assembly 1, the lifting unit drives the connecting shaft 5 to rise and fall in the fixed assembly 2, and the first driver 4 drives the connecting shaft 5 to drive the connecting shaft 5 to drive the slag removing assembly 1 to rotate in the ladle furnace 7, so as to form a slag removing arrangement for the slag body on the inner wall of the ladle furnace 7.

[0026] In this embodiment, the fixing assembly 2 includes a fixing frame 21 and a clamping assembly 22 assembled on the fixing frame 21. The clamping assembly 22 has a retractable clamping portion. When slag is removed, the clamping portion extends to clamp the outer wall of the ladle furnace 7 to fix the slag removal device on the ladle furnace 7.

[0027] The slag removing assembly 1 includes a grinding roller 11 and a second driving unit for driving the grinding roller 11 to rotate. A mounting frame 13 is fixed to one end of the connecting shaft 5 extending into the ladle furnace 7. The grinding roller 11 is rotatably mounted on the mounting frame 13. The second driving unit is mounted on the mounting frame 13 and drives the connected grinding roller 11 to drive the grinding roller 11 to rotate. When removing slag, the rotating grinding rollers 11 abut against the inner wall of the ladle furnace 7 respectively, and the grinding roller 11 is driven by the second driving unit to realize its own rotation, and at the same time, it also synchronously rotates circumferentially in the ladle furnace 7 around the connecting shaft 5 as the center, so as to ensure that the grinding roller 11 can grind and remove the slag on the inner wall of the ladle furnace 7, and can also avoid manual assisted slag removing operations.

[0028] The specific lifting unit is a lifting cylinder 3, which is fixed on the top of the fixed frame 21. The two telescopic ends of the lifting cylinder 3 are respectively fixed at the two ends of the connecting plate 6. The upper end of the connecting shaft 5 is assembled on the center of the connecting plate 6 through a bearing, and the lower end can movably pass through the center of the fixed frame 21 and extend into the ladle furnace 7, and is fixedly connected with a slag removing assembly 1. When the telescopic end of the lifting cylinder 3 is telescoped in the upper and lower directions, the connecting plate 6 fixed on the telescopic end of the lifting cylinder 3 is also synchronously lifted and lowered in the upper and lower directions, thereby driving the connecting shaft 5 to lift and lower in the upper and lower directions, so as to adjust the real-time height of the grinding roller 11 in the ladle furnace 7 together with the mounting frame 13 fixed at the lower end of the connecting shaft 5, and then adjust the slag removing operation height of the grinding roller 11, so as to further reduce the probability of manual assisted slag removing operation.

[0029] The fixing assembly 2 is fixed on the ladle furnace 7, so that the slag removing assembly 1 can be extended into the ladle furnace 7 and accurately pressed against the inner wall of the ladle furnace 7, so as to facilitate the next step of slag removing operation.

[0030] The lifting unit, the first driver 4 and the connecting shaft 5 cooperate with each other to realize the lifting and lowering of the slag removing assembly 1 in the ladle furnace 7, thereby adjusting the slag removing operation height of the slag removing assembly 1, and at the same time driving the slag removing assembly 1 to rotate around the connecting shaft 5 in the ladle furnace 7, so as to realize the slag removing assembly 1 to peel off or clean the slag body in all areas on the inner wall of the ladle furnace 7, so as to effectively improve the removal efficiency and cleaning effect of the slag body on the inner wall of the ladle furnace 7, avoid manual participation in the slag removing operation, and can be simple and convenient to operate, while taking into account the slag removing work efficiency.

[0031] In another preferred embodiment, Figure 1 and Figure 3 As shown, the first driver 4 is fixed on the fixing frame 21, a pulley is fixed on the connecting shaft 5, and the driving shaft of the first driver 4 and the pulley on the connecting shaft 5 are connected to each other through a transmission belt.

[0032] More specifically, Figure 3 The mounting frame 13 shown includes a first mounting plate and a second mounting plate which are spaced apart from each other in upper and lower directions. The middle parts of the first mounting plate and the second mounting plate are fixedly mounted on the connecting shaft 5. The grinding roller 11 is arranged between the first mounting plate and the second mounting plate. The second driving unit includes a second driver 12 which is fixed on the first mounting plate. The rotating end of the grinding roller 11 and the driving end of the second driver 12 are connected by a transmission belt.

[0033] In a specific implementation, the first driver 4 and the second driver 12 are both drive motors, and the number of grinding rollers 11 is multiple, such as 2, 3 or more than 4 grinding rollers 11, and the multiple grinding rollers 11 are evenly arranged at intervals, so as to achieve grinding of the slag body while further effectively improving the slag removal efficiency.

[0034] The driving shaft of the first driver 4 drives the connecting shaft 5 to rotate through the transmission belt, thereby driving the grinding roller 11 on the mounting frame 13 to rotate around the connecting shaft 5 in the ladle furnace 7.

[0035] At the same time, the rotating shaft of the grinding roller 11 can be rotatably passed through the first mounting plate, and then a pulley is installed to form the rotating end of the grinding roller 11. The driving shaft of the second driver 12 drives the rotating end of the grinding roller 11 to rotate through the transmission belt, so as to realize the outer circumference of the grinding roller 11 installed on the mounting frame 13 to rotate around the central axis of the grinding roller 11 itself.

[0036] In another preferred embodiment, Figure 3 and Figure 4As shown, the clamping assembly 22 includes a threaded rod 221 and a clamping slider 222 fixed on the threaded rod 221 and used for clamping, a fixing seat 211 is fixed on the fixing frame 21, one end of the threaded rod 221 is fixed with the clamping slider 222, and the clamping slider 222 is slidably assembled on the fixing frame 21, and the other end of the threaded rod 221 passes through the fixing seat 211 and forms a threaded connection, and the clamping slider 222 is the clamping part.

[0037] By rotating the threaded rod 221, the threaded rod 221 can be screwed in or out under the screw connection restriction of the fixed seat 211, so as to drive the clamping slider 222 to move closer to or away from the outer wall of the ladle furnace 7 at the upper end under the sliding connection restriction of the fixed frame 21, thereby realizing the slag removal device to clamp or loosen the outer wall of the ladle furnace 7.

[0038] When the slag removing device hugs the outer wall of the ladle furnace 7, the hugging slider 222 is tightly pressed against the outer wall of the ladle furnace 7 to achieve the limiting fixation of the slag removing device.

[0039] Further preferably, Figure 1 and Figure 3 As shown, the fixing frame 21 has a fixing plate 212 and a supporting frame 213 connected to each other. The supporting frame 213 is arranged on the outer peripheral surface of the fixing plate 212 , and a handle 214 and a clamping assembly 22 are respectively mounted on the supporting frame 213 .

[0040] In this specific embodiment, the number of support frames 213 is 4, and the 4 support frames 213 are evenly spaced and arranged around the outer peripheral surface of the fixed plate 212. Each support frame 213 is respectively provided with a clamping component 22 and a fixed seat 211, and each support frame 213 is provided with a guide slot. The clamping slider 222 of each clamping component 22 has a sliding end that can be slidably inserted into the guide slot of the corresponding support frame 213 to form a Figure 1 The uniform force shown is beneficial for the fixing assembly 2 to firmly hold the outer wall of the ladle furnace 7.

[0041] At the same time, each support frame 213 is provided with a handle 214 to facilitate the handling and movement of the slag removing device.

[0042] In addition, the operation method of the slag removing device of this specific embodiment is as follows:

[0043] like Figure 1As shown, when the slag removing device is needed to remove the slag on the inner wall of the ladle furnace 7, the support frame 213 is first placed on the top of the ladle furnace 7 through the handle 214 and the slag removing assembly 1 is extended into the ladle furnace 7. Then, the threaded rod 221 is rotated to drive the clamping slider 222 to slide along the guide groove of the support frame 213 and toward the outer wall of the ladle furnace 7 until it is tightly against the outer wall of the ladle furnace 7 to achieve the limited fixation of the slag removing device. At this time, all the grinding rollers 11 of the slag removing assembly 1 can also be against the inner wall of the ladle furnace 7 at the same time.

[0044] The lifting cylinder 3 is then started to control the extension or retraction of the telescopic end of the lifting cylinder 3, thereby driving the connecting shaft 5 to rise or fall accordingly, and the first driver 4 is started synchronously, and the transmission is realized through the transmission belt between the driving shaft of the first driver 4 and the pulley on the connecting shaft 5, so as to ensure that the connecting shaft 5 rises and falls in the upward and downward directions, and can also ensure that the connecting shaft 5 is driven by the first driver 4 and realizes self-rotation, and then the second driver 12 is started in coordination, and the transmission is realized through the transmission belt between the rotating end of the grinding roller 11 and the driving end of the second driver 12, so as to ensure that the grinding roller 11 is driven by the second driver 12 to realize its own rotation, and also synchronously rotates circumferentially in the ladle furnace 7 around the connecting shaft 5 as the center, so as to realize the slag stripping or cleaning of the slag body in all areas on the inner wall of the ladle furnace 7 by the slag stripping assembly 1, so as to effectively improve the removal efficiency and cleaning effect of the slag body on the inner wall of the ladle furnace 7, avoid manual participation in the slag stripping operation, and can also be simple and convenient to operate.

[0045] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A slag removal device for a ladle furnace, characterized in that; It comprises a lifting unit, a first driving unit having a first driver, a fixing component for fixing on a ladle furnace, and a slag removing component for removing slag from the inner wall of the ladle furnace; A connecting shaft is provided between the lifting unit and the fixed assembly, one end of the connecting shaft is rotatably connected to the lifting unit, and the other end of the connecting shaft is movably passed through the fixed assembly and extends into the ladle furnace, and is fixedly connected to the slag removing assembly; The lifting unit drives the connecting shaft to rise and fall in the fixed assembly, and the first driver drives the connecting shaft to drive the connecting shaft to drive the slag removing assembly to rotate in the ladle furnace to form a slag removing arrangement for the inner wall of the ladle furnace.

2. The slag removing device for a ladle furnace according to claim 1, characterized in that: The slag removing assembly includes a grinding roller and a second driving unit for driving the grinding roller to rotate, a mounting frame is fixed to one end of the connecting shaft extending into the ladle furnace, the grinding roller is rotatably mounted on the mounting frame, the second driving unit is mounted on the mounting frame and drivingly connected to the grinding roller to drive the grinding roller to rotate; when removing slag, the rotating grinding rollers respectively abut against the inner wall of the ladle furnace.

3. The slag removing device for a ladle furnace according to claim 2, characterized in that: The mounting frame includes a first mounting plate and a second mounting plate which are spaced apart from each other in an upper and lower direction. The middle parts of the first mounting plate and the second mounting plate are fixedly mounted on the connecting shaft. The grinding roller is arranged between the first mounting plate and the second mounting plate. The second driving unit is mounted on the first mounting plate.

4. The slag removing device for a ladle furnace according to claim 3, characterized in that: The second driving unit comprises a second driver, which is fixed on the first mounting plate, and a transmission connection is achieved between the rotating end of the grinding roller and the driving end of the second driver via a transmission belt.

5. The slag removing device for a ladle furnace according to any one of claims 1 to 4, characterized in that: The fixing assembly comprises a fixing frame and a clamping assembly mounted on the fixing frame; the clamping assembly has a retractable clamping portion, and when slag is removed, the clamping portion extends to clamp the outer wall of the ladle furnace.

6. The slag removing device for a ladle furnace according to claim 5, characterized in that: The clamping assembly includes a threaded rod and a clamping slider fixed on the threaded rod and used for clamping, a fixing seat is fixed on the fixing frame, one end of the threaded rod is fixed with the clamping slider, and the clamping slider is slidably assembled on the fixing frame, and the other end of the threaded rod passes through the fixing seat to form a threaded connection; the clamping slider is the clamping part.

7. The slag removing device for a ladle furnace according to claim 5, characterized in that: The first driver is fixed on the fixing frame, a pulley is fixed on the connecting shaft, and a transmission connection is achieved between the driving shaft of the first driver and the pulley on the connecting shaft via a transmission belt.

8. The slag removing device for a ladle furnace according to claim 5, characterized in that: The lifting unit is a lifting cylinder, which is fixed on the fixed frame. A connecting plate is fixed to the telescopic end of the lifting cylinder. One end of the connecting shaft is assembled on the connecting plate through a bearing, and the other end can be movably passed through the fixed frame and extended into the ladle furnace, and is fixedly connected to the slag removing assembly.

9. The slag removing device for a ladle furnace according to claim 5, characterized in that: The fixing frame comprises a fixing plate and a supporting frame which are connected to each other. The supporting frame is arranged on the outer peripheral surface of the fixing plate. A handle and the clamping assembly are respectively mounted on the supporting frame.

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